Cover - shares	9 Months Ended
	Jan. 31, 2023	Mar. 06, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jan. 31, 2023
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--04-30
Entity File Number	001-32839
Entity Registrant Name	AVID BIOSERVICES, INC.
Entity Central Index Key	0000704562
Entity Tax Identification Number	95-3698422
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	14191 Myford Road
Entity Address, City or Town	Tustin
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92780
City Area Code	(714)
Local Phone Number	508-6100
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	CDMO
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		62,547,056